<?php
/**
 *  基本图片处理，用于完成图片缩入，水印添加
 *  当水印图超过目标图片尺寸时，水印图能自动适应目标图片而缩小
 *  水印图可以设置跟背景的合并度
 *
 *  Copyright(c) 2005 by ustb99. All rights reserved
 *
 *  To contact the author write to {@link mailto:ustb80@163.com}
 *
 * @author 偶然
 * @version $Id: thumb.class.php,v 1.9 2006/09/30 09:31:56 zengjian Exp $
 * @package system
 */
 
/**
 * ThumbHandler
 * @access public
 */
 
/*
 使用方法:
 自动裁切:
 程序会按照图片的尺寸从中部裁切最大的正方形，并按目标尺寸进行缩略
 
 $t->setSrcImg("img/test.jpg");
 $t->setCutType(1);//这一句就OK了
 $t->setDstImg("tmp/new_test.jpg");
 $t->createImg(60,60);
 
 手工裁切:
 程序会按照指定的位置从源图上取图
 
 $t->setSrcImg("img/test.jpg");
 $t->setCutType(2);//指明为手工裁切
 $t->setSrcCutPosition(100, 100);// 源图起点坐标
 $t->setRectangleCut(300, 200);// 裁切尺寸
 $t->setDstImg("tmp/new_test.jpg");
 $t->createImg(300,200);



 使用实例:
--------------
require_once('lib/thumb.class.php');
 
$t = new ThumbHandler();
 
$t->setSrcImg("img/test.jpg");
$t->setDstImg("tmp/new_test.jpg");
$t->setMaskImg("img/test.gif");
$t->setMaskPosition(1);
$t->setMaskImgPct(80);
$t->setDstImgBorder(4,"#dddddd");
 
// 指定缩放比例
$t->createImg(300,200);

-----------------

require_once('lib/thumb.class.php');
 
$t = new ThumbHandler();
 
// 基本使用
$t->setSrcImg("img/test.jpg");
$t->setMaskWord("test");
$t->setDstImgBorder(10,"#dddddd");
 
// 指定缩放比例
$t->createImg(50);

-----------------

equire_once('lib/thumb.class.php');
 
$t = new ThumbHandler();
 
// 基本使用
$t->setSrcImg("img/test.jpg");
$t->setMaskWord("test");
 
// 指定固定宽高
$t->createImg(200,200);

----------------

require_once('lib/thumb.class.php');
 
$t = new ThumbHandler();
 
$t->setSrcImg("img/test.jpg");
$t->setDstImg("tmp/new_test.jpg");
$t->setMaskWord("test");
 
// 指定固定宽高
$t->createImg(200,200);

----------------

require_once('lib/thumb.class.php');
 
$t = new ThumbHandler();
 
$t->setSrcImg("img/test.jpg");
 
// 指定字体文件地址
$t->setMaskFont("c:/winnt/fonts/arial.ttf");
$t->setMaskFontSize(20);
$t->setMaskFontColor("#ffff00");
$t->setMaskWord("test3333333");
$t->setDstImgBorder(99,"#dddddd");
$t->createImg(50);
 
-----------------

require_once('lib/thumb.class.php');
 
$t = new ThumbHandler();
 
$t->setSrcImg("img/test.jpg");
$t->setMaskOffsetX(55);
$t->setMaskOffsetY(55);
$t->setMaskPosition(1);
//$t->setMaskPosition(2);
//$t->setMaskPosition(3);
//$t->setMaskPosition(4);
$t->setMaskFontColor("#ffff00");
$t->setMaskWord("test");
 
// 指定固定宽高
$t->createImg(50);

----------------------
require_once('lib/thumb.class.php');
 
$t = new ThumbHandler();
 
$t->setSrcImg("img/test.jpg");
$t->setMaskFont("c:/winnt/fonts/simyou.ttf");
$t->setMaskFontSize(20);
$t->setMaskFontColor("#ffffff");
$t->setMaskTxtPct(20);
$t->setDstImgBorder(10,"#dddddd");
$text = "中文";
$str = mb_convert_encoding($text, "UTF-8", "gb2312");
$t->setMaskWord($str);
$t->setMaskWord("test");
 
// 指定固定宽高
$t->createImg(50);
--------------------

*/
class Thumb_handler
{
 var $dst_img;// 目标文件
 var $h_src; // 图片资源句柄
 var $h_dst;// 新图句柄
 var $h_mask;// 水印句柄
 var $img_create_quality = 100;// 图片生成质量
 var $img_display_quality = 80;// 图片显示质量,默认为75
 var $img_scale = 0;// 图片缩放比例
 var $src_w = 0;// 原图宽度
 var $src_h = 0;// 原图高度
 var $dst_w = 0;// 新图总宽度
 var $dst_h = 0;// 新图总高度
 var $fill_w;// 填充图形宽
 var $fill_h;// 填充图形高
 var $copy_w;// 拷贝图形宽
 var $copy_h;// 拷贝图形高
 var $src_x = 0;// 原图绘制起始横坐标
 var $src_y = 0;// 原图绘制起始纵坐标
 var $start_x;// 新图绘制起始横坐标
 var $start_y;// 新图绘制起始纵坐标
 var $mask_word;// 水印文字
 var $mask_img;// 水印图片
 var $mask_pos_x = 0;// 水印横坐标
 var $mask_pos_y = 0;// 水印纵坐标
 var $mask_offset_x = 5;// 水印横向偏移
 var $mask_offset_y = 5;// 水印纵向偏移
 var $font_w;// 水印字体宽
 var $font_h;// 水印字体高
 var $mask_w;// 水印宽
 var $mask_h;// 水印高
 var $mask_font_color = "#ffffff";// 水印文字颜色
 var $mask_font = 2;// 水印字体
 var $font_size;// 尺寸
 var $mask_position = 0;// 水印位置
 var $mask_img_pct = 50;// 图片合并程度,值越大，合并程序越低
 var $mask_txt_pct = 50;// 文字合并程度,值越小，合并程序越低
 var $img_border_size = 0;// 图片边框尺寸
 var $img_border_color;// 图片边框颜色
 var $_flip_x=0;// 水平翻转次数
 var $_flip_y=0;// 垂直翻转次数
 
 var $cut_type=0;// 剪切类型
 
 var $img_type;// 文件类型
 
 // 文件类型定义,并指出了输出图片的函数
 var $all_type = array(
 "jpg"  => array("output"=>"imagejpeg"),
 "gif"  => array("output"=>"imagegif"),
 "png"  => array("output"=>"imagepng"),
 "wbmp" => array("output"=>"image2wbmp"),
 "jpeg" => array("output"=>"imagejpeg"));
 
 /**
 * 构造函数
 */
 function ThumbHandler()
 {
 $this->mask_font_color = "#ffffff";
 $this->font = 2;
 $this->font_size = 12;
 }
 
 /**
 * 取得图片的宽
 */
 function getImgWidth($src)
 {
 return imagesx($src);
 }
 
 /**
 * 取得图片的高
 */
 function getImgHeight($src)
 {
 return imagesy($src);
 }
 
 /**
 * 设置图片生成路径
 *
 * @param    string    $src_img   图片生成路径
 */
 function setSrcImg($src_img, $img_type=null)
 {
 if(!file_exists($src_img))
 {
 die("图片不存在");
 }
 
 if(!empty($img_type))
 {
 $this->img_type = $img_type;
 }
 else
 {
 $this->img_type = $this->_getImgType($src_img);
 }
 
 $this->_checkValid($this->img_type);
 
 // file_get_contents函数要求php版本>4.3.0
 $src = '';
 if(function_exists("file_get_contents"))
 {
 $src = file_get_contents($src_img);
 }
 else
 {
 $handle = fopen ($src_img, "r");
 while (!feof ($handle))
 {
 $src .= fgets($fd, 4096);
 }
 fclose ($handle);
 }
 if(empty($src))
 {
 die("图片源为空");
 }
 $this->h_src = @ImageCreateFromString($src);
 $this->src_w = $this->getImgWidth($this->h_src);
 $this->src_h = $this->getImgHeight($this->h_src);
 }
 
 /**
 * 设置图片生成路径
 *
 * @param    string    $dst_img   图片生成路径
 */
 function setDstImg($dst_img)
 {
 $arr  = explode('/',$dst_img);
 $last = array_pop($arr);
 $path = implode('/',$arr);
 $this->_mkdirs($path);
 $this->dst_img = $dst_img;
 }
 
 /**
 * 设置图片的显示质量
 *
 * @param    string      $n    质量
 */
 function setImgDisplayQuality($n)
 {
 $this->img_display_quality = (int)$n;
 }
 
 /**
 * 设置图片的生成质量
 *
 * @param    string      $n    质量
 */
 function setImgCreateQuality($n)
 {
 $this->img_create_quality = (int)$n;
 }
 
 /**
 * 设置文字水印
 *
 * @param    string     $word    水印文字
 * @param    integer    $font    水印字体
 * @param    string     $color   水印字体颜色
 */
 function setMaskWord($word)
 {
 $this->mask_word .= $word;
 }
 
 /**
 * 设置字体颜色
 *
 * @param    string     $color    字体颜色
 */
 function setMaskFontColor($color="#ffffff")
 {
 $this->mask_font_color = $color;
 }
 
 /**
 * 设置水印字体
 *
 * @param    string|integer    $font    字体
 */
 function setMaskFont($font=2)
 {
 if(!is_numeric($font) && !file_exists($font))
 {
 die("字体文件不存在");
 }
 $this->font = $font;
 }
 
 /**
 * 设置文字字体大小,仅对truetype字体有效
 */
 function setMaskFontSize($size = "12")
 {
 $this->font_size = $size;
 }
 
 /**
 * 设置图片水印
 *
 * @param    string    $img     水印图片源
 */
 function setMaskImg($img)
 {
 $this->mask_img = $img;
 }
 
 /**
 * 设置水印横向偏移
 *
 * @param    integer     $x    横向偏移量
 */
 function setMaskOffsetX($x)
 {
 $this->mask_offset_x = (int)$x;
 }
 
 /**
 * 设置水印纵向偏移
 *
 * @param    integer     $y    纵向偏移量
 */
 function setMaskOffsetY($y)
 {
 $this->mask_offset_y = (int)$y;
 }
 
 /**
 * 指定水印位置
 *
 * @param    integer     $position    位置,1:左上,2:左下,3:右上,0/4:右下
 */
 function setMaskPosition($position=0)
 {
 $this->mask_position = (int)$position;
 }
 
 /**
 * 设置图片合并程度
 *
 * @param    integer     $n    合并程度
 */
 function setMaskImgPct($n)
 {
 $this->mask_img_pct = (int)$n;
 }
 
 /**
 * 设置文字合并程度
 *
 * @param    integer     $n    合并程度
 */
 function setMaskTxtPct($n)
 {
 $this->mask_txt_pct = (int)$n;
 }
 
 /**
 * 设置缩略图边框
 *
 * @param    (类型)     (参数名)    (描述)
 */
 function setDstImgBorder($size=1, $color="#000000")
 {
 $this->img_border_size  = (int)$size;
 $this->img_border_color = $color;
 }
 
 /**
 * 水平翻转
 */
 function flipH()
 {
 $this->_flip_x++;
 }
 
 /**
 * 垂直翻转
 */
 function flipV()
 {
 $this->_flip_y++;
 }
 
 /**
 * 设置剪切类型
 *
 * @param    (类型)     (参数名)    (描述)
 */
 function setCutType($type)
 {
 $this->cut_type = (int)$type;
 }
 
 /**
 * 设置图片剪切
 *
 * @param    integer     $width    矩形剪切
 */
 function setRectangleCut($width, $height)
 {
 $this->fill_w = (int)$width;
 $this->fill_h = (int)$height;
 }
 
 /**
 * 设置源图剪切起始坐标点
 *
 * @param    (类型)     (参数名)    (描述)
 */
 function setSrcCutPosition($x, $y)
 {
 $this->src_x  = (int)$x;
 $this->src_y  = (int)$y;
 }
 
 /**
 * 创建图片,主函数
 * @param    integer    $a     当缺少第二个参数时，此参数将用作百分比，
 *                             否则作为宽度值
 * @param    integer    $b     图片缩放后的高度
 */
 function createImg($a, $b=null)
 {
 $num = func_num_args();
 if(1 == $num)
 {
 $r = (int)$a;
 if($r < 1)
 {
 die("图片缩放比例不得小于1");
 }
 $this->img_scale = $r;
 $this->_setNewImgSize($r);
 }
 
 if(2 == $num)
 {
 $w = (int)$a;
 $h = (int)$b;
 if(0 == $w)
 {
 die("目标宽度不能为0");
 }
 if(0 == $h)
 {
 die("目标高度不能为0");
 }
 $this->_setNewImgSize($w, $h);
 }
 
 if($this->_flip_x%2!=0)
 {
 $this->_flipH($this->h_src);
 }
 
 if($this->_flip_y%2!=0)
 {
 $this->_flipV($this->h_src);
 }
 $this->_createMask();
 $this->_output();
 
 // 释放
 if(imagedestroy($this->h_src) && imagedestroy($this->h_dst))
 {
 Return true;
 }
 else
 {
 Return false;
 }
 }
 
 /**
 * 生成水印,调用了生成水印文字和水印图片两个方法
 */
 function _createMask()
 {
 if($this->mask_word)
 {
 // 获取字体信息
 $this->_setFontInfo();
 
 if($this->_isFull())
 {
 die("水印文字过大");
 }
 else
 {
 $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);
 $white = ImageColorAllocate($this->h_dst,255,255,255);
 imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色
 $this->_drawBorder();
 imagecopyresampled( $this->h_dst, $this->h_src,
 $this->start_x, $this->start_y,
 $this->src_x, $this->src_y,
 $this->fill_w, $this->fill_h,
 $this->copy_w, $this->copy_h);
 $this->_createMaskWord($this->h_dst);
 }
 }
 
 if($this->mask_img)
 {
 $this->_loadMaskImg();//加载时，取得宽高
 
 if($this->_isFull())
 {
 // 将水印生成在原图上再拷
 $this->_createMaskImg($this->h_src);
 $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);
 $white = ImageColorAllocate($this->h_dst,255,255,255);
 imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色
 $this->_drawBorder();
 imagecopyresampled( $this->h_dst, $this->h_src,
 $this->start_x, $this->start_y,
 $this->src_x, $this->src_y,
 $this->fill_w, $this->start_y,
 $this->copy_w, $this->copy_h);
 }
 else
 {
 // 创建新图并拷贝
 $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);
 $white = ImageColorAllocate($this->h_dst,255,255,255);
 imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色
 $this->_drawBorder();
 imagecopyresampled( $this->h_dst, $this->h_src,
 $this->start_x, $this->start_y,
 $this->src_x, $this->src_y,
 $this->fill_w, $this->fill_h,
 $this->copy_w, $this->copy_h);
 $this->_createMaskImg($this->h_dst);
 }
 }
 
 if(empty($this->mask_word) && empty($this->mask_img))
 {
 $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h);
 $white = ImageColorAllocate($this->h_dst,255,255,255);
 imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色
 $this->_drawBorder();
 
 imagecopyresampled( $this->h_dst, $this->h_src,
 $this->start_x, $this->start_y,
 $this->src_x, $this->src_y,
 $this->fill_w, $this->fill_h,
 $this->copy_w, $this->copy_h);
 }
 }
 
 /**
 * 画边框
 */
 function _drawBorder()
 {
 if(!empty($this->img_border_size))
 {
 $c = $this->_parseColor($this->img_border_color);
 $color = ImageColorAllocate($this->h_src,$c[0], $c[1], $c[2]);
 imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$color);// 填充背景色
 }
 }
 
 /**
 * 生成水印文字
 */
 function _createMaskWord($src)
 {
 $this->_countMaskPos();
 $this->_checkMaskValid();
 
 $c = $this->_parseColor($this->mask_font_color);
 $color = imagecolorallocatealpha($src, $c[0], $c[1], $c[2], $this->mask_txt_pct);
 
 if(is_numeric($this->font))
 {
 imagestring($src,
 $this->font,
 $this->mask_pos_x, $this->mask_pos_y,
 $this->mask_word,
 $color);
 }
 else
 {
 imagettftext($src,
 $this->font_size, 0,
 $this->mask_pos_x, $this->mask_pos_y,
 $color,
 $this->font,
 $this->mask_word);
 }
 }
 
 /**
 * 生成水印图
 */
 function _createMaskImg($src)
 {
 $this->_countMaskPos();
 $this->_checkMaskValid();
 imagecopymerge($src,
 $this->h_mask,
 $this->mask_pos_x ,$this->mask_pos_y,
 0, 0,
 $this->mask_w, $this->mask_h,
 $this->mask_img_pct);
 
 imagedestroy($this->h_mask);
 }
 
 /**
 * 加载水印图
 */
 function _loadMaskImg()
 {
 $mask_type = $this->_getImgType($this->mask_img);
 $this->_checkValid($mask_type);
 
 // file_get_contents函数要求php版本>4.3.0
 $src = '';
 if(function_exists("file_get_contents"))
 {
 $src = file_get_contents($this->mask_img);
 }
 else
 {
 $handle = fopen ($this->mask_img, "r");
 while (!feof ($handle))
 {
 $src .= fgets($fd, 4096);
 }
 fclose ($handle);
 }
 if(empty($this->mask_img))
 {
 die("水印图片为空");
 }
 $this->h_mask = ImageCreateFromString($src);
 $this->mask_w = $this->getImgWidth($this->h_mask);
 $this->mask_h = $this->getImgHeight($this->h_mask);
 }
 
 /**
 * 图片输出
 */
 function _output()
 {
 $img_type  = $this->img_type;
 $func_name = $this->all_type[$img_type]['output'];
 if(function_exists($func_name))
 {
 // 判断浏览器,若是IE就不发送头
 if(isset($_SERVER['HTTP_USER_AGENT']))
 {
 $ua = strtoupper($_SERVER['HTTP_USER_AGENT']);
 if(!preg_match('/^.*MSIE.*\)$/i',$ua))
 {
 header("Content-type:$img_type");
 }
 }
 $func_name($this->h_dst, $this->dst_img, $this->img_display_quality);
 }
 else
 {
 Return false;
 }
 }
 
 /**
 * 分析颜色
 *
 * @param    string     $color    十六进制颜色
 */
 function _parseColor($color){

    print_r($ii_isFull());exit;
     $arr = array();
     if($ii=1 && $ii_isFull()){

        switch($this->mask_position){

            case 1:
            // 左上
            $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
            $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
            break;

            case 2:
            // 左下
            $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
            $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
            break;

            case 3:
            // 右上
            $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
            $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
            break;

            case 4:
            // 右下
            $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
            $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
            break;

            default:
            // 默认将水印放到右下,偏移指定像素
            $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
            $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
            break;
        }
     }else
     {
     switch($this->mask_position)
     {
     case 1:
     // 左上
     $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
     $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
     break;
     
     case 2:
     // 左下
     $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
     $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
     break;
     
     case 3:
     // 右上
     $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
     $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
     break;
     
     case 4:
     // 右下
     $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
     $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
     break;
     
     default:
     // 默认将水印放到右下,偏移指定像素
     $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
     $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
     break;
     }
     }
 }
 
 /**
 * 设置字体信息
 */
 function _setFontInfo()
 {
 if(is_numeric($this->font))
 {
 $this->font_w  = imagefontwidth($this->font);
 $this->font_h  = imagefontheight($this->font);
 
 // 计算水印字体所占宽高
 $word_length   = strlen($this->mask_word);
 $this->mask_w  = $this->font_w*$word_length;
 $this->mask_h  = $this->font_h;
 }
 else
 {
 $arr = imagettfbbox ($this->font_size,0, $this->font,$this->mask_word);
 $this->mask_w  = abs($arr[0] - $arr[2]);
 $this->mask_h  = abs($arr[7] - $arr[1]);
 }
 }
 
 /**
 * 设置新图尺寸
 *
 * @param    integer     $img_w   目标宽度
 * @param    integer     $img_h   目标高度
 */
 function _setNewImgSize($img_w, $img_h=null)
 {
 $num = func_num_args();
 if(1 == $num)
 {
 $this->img_scale = $img_w;// 宽度作为比例
 $this->fill_w = round($this->src_w * $this->img_scale / 100) - $this->img_border_size*2;
 $this->fill_h = round($this->src_h * $this->img_scale / 100) - $this->img_border_size*2;
 
 // 源文件起始坐标
 $this->src_x  = 0;
 $this->src_y  = 0;
 $this->copy_w = $this->src_w;
 $this->copy_h = $this->src_h;
 
 // 目标尺寸
 $this->dst_w   = $this->fill_w + $this->img_border_size*2;
 $this->dst_h   = $this->fill_h + $this->img_border_size*2;
 }
 
 if(2 == $num)
 {
 $fill_w   = (int)$img_w - $this->img_border_size*2;
 $fill_h   = (int)$img_h - $this->img_border_size*2;
 if($fill_w < 0 || $fill_h < 0)
 {
 die("图片边框过大，已超过了图片的宽度");
 }
 $rate_w = $this->src_w/$fill_w;
 $rate_h = $this->src_h/$fill_h;
 
 switch($this->cut_type)
 {
 case 0:
 // 如果原图大于缩略图，产生缩小，否则不缩小
 if($rate_w < 1 && $rate_h < 1)
 {
 $this->fill_w = (int)$this->src_w;
 $this->fill_h = (int)$this->src_h;
 }
 else
 {
 if($rate_w >= $rate_h)
 {
 $this->fill_w = (int)$fill_w;
 $this->fill_h = round($this->src_h/$rate_w);
 }
 else
 {
 $this->fill_w = round($this->src_w/$rate_h);
 $this->fill_h = (int)$fill_h;
 }
 }
 
 $this->src_x  = 0;
 $this->src_y  = 0;
 
 $this->copy_w = $this->src_w;
 $this->copy_h = $this->src_h;
 
 // 目标尺寸
 $this->dst_w   = $this->fill_w + $this->img_border_size*2;
 $this->dst_h   = $this->fill_h + $this->img_border_size*2;
 break;
 
 // 自动裁切
 case 1:
 // 如果图片是缩小剪切才进行操作
 if($rate_w >= 1 && $rate_h >=1)
 {
 if($this->src_w > $this->src_h)
 {
 $src_x = round($this->src_w-$this->src_h)/2;
 $this->setSrcCutPosition($src_x, 0);
 $this->setRectangleCut($fill_h, $fill_h);
 
 $this->copy_w = $this->src_h;
 $this->copy_h = $this->src_h;
 
 }
 elseif($this->src_w < $this->src_h)
 {
 $src_y = round($this->src_h-$this->src_w)/2;
 $this->setSrcCutPosition(0, $src_y);
 $this->setRectangleCut($fill_w, $fill_h);
 
 $this->copy_w = $this->src_w;
 $this->copy_h = $this->src_w;
 }
 else
 {
 $this->setSrcCutPosition(0, 0);
 $this->copy_w = $this->src_w;
 $this->copy_h = $this->src_w;
 $this->setRectangleCut($fill_w, $fill_h);
 }
 }
 else
 {
 $this->setSrcCutPosition(0, 0);
 $this->setRectangleCut($this->src_w, $this->src_h);
 
 $this->copy_w = $this->src_w;
 $this->copy_h = $this->src_h;
 }
 
 // 目标尺寸
 $this->dst_w   = $this->fill_w + $this->img_border_size*2;
 $this->dst_h   = $this->fill_h + $this->img_border_size*2;
 
 break;
 
 // 手工裁切
 case 2:
 $this->copy_w = $this->fill_w;
 $this->copy_h = $this->fill_h;
 
 // 目标尺寸
 $this->dst_w   = $this->fill_w + $this->img_border_size*2;
 $this->dst_h   = $this->fill_h + $this->img_border_size*2;
 
 break;
 default:
 break;
 
 }
 }
 
 // 目标文件起始坐标
 $this->start_x = $this->img_border_size;
 $this->start_y = $this->img_border_size;
 }
 
 /**
 * 检查水印图是否大于生成后的图片宽高
 */
 function _isFull()
 {
 Return (   $this->mask_w + $this->mask_offset_x > $this->fill_w
 || $this->mask_h + $this->mask_offset_y > $this->fill_h)
 ?true:false;
 }
 
 /**
 * 检查水印图是否超过原图
 */
 function _checkMaskValid()
 {
 if(    $this->mask_w + $this->mask_offset_x > $this->src_w
 || $this->mask_h + $this->mask_offset_y > $this->src_h)
 {
 die("水印图片尺寸大于原图，请缩小水印图");
 }
 }
 
 /**
 * 取得图片类型
 *
 * @param    string     $file_path    文件路径
 */
 function _getImgType($file_path)
 {
 $type_list = array("1"=>"gif","2"=>"jpg","3"=>"png","4"=>"swf","5" => "psd","6"=>"bmp","15"=>"wbmp");
 if(file_exists($file_path))
 {
 $img_info = @getimagesize ($file_path);
 if(isset($type_list[$img_info[2]]))
 {
 Return $type_list[$img_info[2]];
 }
 }
 else
 {
 die("文件不存在,不能取得文件类型!");
 }
 }
 
 /**
 * 检查图片类型是否合法,调用了array_key_exists函数，此函数要求
 * php版本大于4.1.0
 *
 * @param    string     $img_type    文件类型
 */
 function _checkValid($img_type)
 {
 if(!array_key_exists($img_type, $this->all_type))
 {
 Return false;
 }
 }
 
 /**
 * 按指定路径生成目录
 *
 * @param    string     $path    路径
 */
 function _mkdirs($path)
 {
 $adir = explode('/',$path);
 $dirlist = '';
 $rootdir = array_shift($adir);
 if(($rootdir!='.'||$rootdir!='..')&&!file_exists($rootdir))
 {
 @mkdir($rootdir);
 }
 foreach($adir as $key=>$val)
 {
 if($val!='.'&&$val!='..')
 {
 $dirlist .= "/".$val;
 $dirpath = $rootdir.$dirlist;
 if(!file_exists($dirpath))
 {
 @mkdir($dirpath);
 @chmod($dirpath,0777);
 }
 }
 }
 }
 
 /**
 * 垂直翻转
 *
 * @param    string     $src    图片源
 */
 function _flipV($src)
 {
 $src_x = $this->getImgWidth($src);
 $src_y = $this->getImgHeight($src);
 
 $new_im = imagecreatetruecolor($src_x, $src_y);
 for ($y = 0; $y < $src_y; $y++)
 {
 imagecopy($new_im, $src, 0, $src_y - $y - 1, 0, $y, $src_x, 1);
 }
 $this->h_src = $new_im;
 }
 
 /**
 * 水平翻转
 *
 * @param    string     $src    图片源
 */
 function _flipH($src)
 {
 $src_x = $this->getImgWidth($src);
 $src_y = $this->getImgHeight($src);
 
 $new_im = imagecreatetruecolor($src_x, $src_y);
 for ($x = 0; $x < $src_x; $x++)
 {
 imagecopy($new_im, $src, $src_x - $x - 1, 0, $x, 0, 1, $src_y);
 }
 $this->h_src = $new_im;
 }
}
